Shade-supporting adapter for lamps



April 3, 1928.

P. ACKER SHADE SUPPORTING ADAPTER FOR LAMPS Filed May 8. 1926 V INVENTORPM Q L/M/ BY ATTORNEY Patented Apr. 3, 1928.

UNITED STATES PHILIP ACKER, or BROOKLYN, NEW YORK. I

SHADE-SUPPORTING ADAPTER FOR LAMPS.

Application filed May s, 1926.

The present invention relates to shade supporting adapters for lamps,and is more particularly directed toward a shade supporting adaptersuitable for carrying large shades on 6 the posts commonly found insmall lamps.

As ordinarily constructed, many forms of bridge lamps use metal coveredlamp sockets provided with threads near the open end of the socket.These threads are generally provided on lamp sockets and, in bridgelamps, are utilized for carrying a shade support which may be threadedonto the metal shell of the lamp socket. Bridge lamp shades, as

Well as shades for many other purposes, are 1 made of the size to fitthese shade supports so that one may readily attach the shade of thedesired design and appearance to a standard metal shadeholder which may,in

turn, be threaded onto the metal lamp socket. Table lamps, junior floorlamps, and the like, are generally provided with a small shouldered pinsupported on a harp, or similar device, above the lamp bulb, and theshade is supported from this pin. This type of construction is verycommon where the shades are smaller than the bridge lamp shades abovereferred to, though in some cases it is used with large shades havingspecial frames.

The present invention contemplates an adapter suitable for use insupporting the large shades from the small pins on the smaller lamps.This invention permits one to obtain a much wider selection than hasheretofore been available, for it enables one to make a selection amongall the commercial sizes and designs of bridge lamp shades for use onthe larger lamps, as well as allowing a choice from all the small lampshades.

The accompanying drawings show, for purposes of illustration, two of themany possible embodimentsin which it may take form, it being understoodthat the drawing is illustrative of the invention rather than limitingthe same.

In these drawings:

Figure 1 is a perspective view of one form of adapter;

Figure 2 is a sectional view of the upper part of a table lamp, or thelike, showing the use of the adapter for supporting a shade;

Figure 3 is an elevational view of a table lamp provided with abridge-lamp shade supported by the present form of adapter;

and

Serial No. 107,547.

Figure 4 is a View illustrating a modification.

In Figure 1, which shows one form of the present invention, a unitarysheet metal stamping 17 is provided with threads 18 of the same size asthe threads 11 on the socket shell. This stamping is, as here shown,provided with a central ring 19 supported on three bridging straps 20.The adapter may be provided with a peripheral bead 21 around above thethreads 18 as shown in Figure 1, or it may have a bead 22 belowthethreads 18 as indicated in Figure 4.

mit passing the adapter down over the stem 24 carried on the upper endof a harp 25 or other suitable support commonly found in table lamps,boudoir lamps or the like. The adapter may be placed on this stem 24 andthe finial or nut 26 used to clamp it in place against the shoulder 27of the harp. The heated air from the lamp will pass through the holes 28between the arms or straps 20.

From Figures 2 and 3, it will be apparent that the shade 16 and theshadeholder 13 may be readily utilized by means of the present adapteron small lamps having a small stud or boss 24. It is of course obviousthat any form of shade and shadeholder suitable for use with the threadskirt of the adapter may be employed and that by the use of the presentinvention, one will be able to carry this type of shade and shadeholdersupport in the smaller type of lamps.

It is obvious that the invention may be embodied in many forms andconstructions within the scope of the claims, and I wish it to beunderstood that the particular forms shown are but a few of the manyforms. Various modifications and changes being possible, I do nototherwise limit myself in any way with respect thereto.

What is claimed is:

1. A shade supporting adapter for lamps, in the form of a sheet metalring having external threads of the size of the threads on the skirt ofa lamp socket cover, whereby a shade support adapted to fit a socketcover may fit the ring, and a spider carried by one end of the ring, thespider being apertured to fit the adapter to a small post, or the like.

2. A shade supporting adapter for lamps, said adapter having anapertured end adapt-- ed to pass over the pin on a lamp shade support,and having a skirt provided with ex- The adapter 17 has a small hole 23to perternal threads of the size of the threads on the skirt of a lampsocket cover, whereby a shadesupport adapted to fit a socket cover maybe mounted on the pin.

i 3. A fitting for an electric table lamp having an upwardly projectingthreaded stud provided with a nut, said fitting comprising a cap formedwith a central opening adapted to receive said stud, the side Wall ofsaid cap being formed With peripheral threads 10 of the same diameterand pitch as those in an electric light socket, whereby to receive thethreaded ring of a. bridge lamp shade.

PHILIP ACKER.

